Sleeping bag



FIG. 1 is a three-dimensional perspective view of the sleeping bag according to the present invention;

FIG. 2 is a front elevation view of the sleeping bag thereof;

FIG. 3 is a rear elevation view of the sleeping bag thereof;

FIG. 4 is a right side view of the sleeping bag thereof, the left side being a mirror image thereof;

FIG. 5 is a top plan view of the sleeping bag thereof; and,

FIG. 6 is a bottom plan view of the sleeping bag thereof.

The dashed lines in the drawings illustrate portions of the sleeping bag which form no part of the claimed design. 

CLAIM The ornamental design for a sleeping bag, as shown and described. 